The Indian cement industry is the second largest in the world, comprising 183 large and over 365 mini plants, and plays a critical role in economic growth due to its high correlation with GDP. Major companies include ACC, Ambuja, and UltraTech, with 73% of the market controlled by the top 10 players, and the industry is characterized by high supplier power and intense inter-firm rivalry. Cement's essential role in construction, coupled with taxation and regional distribution of production, shapes the industry's landscape.